Calendar Program I'm having trouble with

Hey everyone, beginner posting again. I am working on this for a school HW assignment. I have the code thus far to make a 'calendar' of sorts. I can't seem to get it to make a new line at the proper spot and continue counting the days of the month.

I can kind of see why. I know it has something to do with my displayTable function. I need it to make a new line before printing the date... It also has this problem when I input 6 for the offset, it will print the date below Sun, but then make a line.

I don't even know if I am asking the right question, it's hard for me to word. Anyway, I've been working on this staring at the screen for hours and can't seem to find a solution myself or through google. There are similar problems, but I just can't get mine to work.

Thank you for your help. I was even going to visit my tutor today about this problem, but he had to cancel. :frusty:

Code:

---

#include <iostream>
#include <iomanip>
using namespace std;

void displayHeader()
{
  cout << "  Su  Mo  Tu  We  Th  Fr  Sa" << endl;
  return;
}




int getDays()
{
  int days;
  cout << "Number of days: ";
  cin >> days;
  return days;
}




int getOffset()
{
  int offset;
  cout << "Offset: ";
    cin >> offset;
  return offset;
}


void displayTable(int numDays, int offset)
{


  // Variable


  int days;


  if (offset == 0)  // Mon
      cout << setw(4)  << " ";
  else if (offset == 1)  // Tues
      cout << setw(8)  << " ";
  else if (offset == 2)  // Wed
      cout << setw(12) << " ";
  else if (offset == 3)  // Thurs
      cout << setw(16) << " ";
  else if (offset == 4)  // Fri
      cout << setw(20) << " ";
  else if (offset == 5)  // Sat
      cout << setw(24) << " ";
  else (offset == 6)  // Sun
          ;


  for (days = 1; days <= numDays; days++)
  {
      cout << "  " << setw(2) << days;
      if ((days + offset) % 7 == 0)
      cout  << "\n";
  }
  cout << endl;
  return;
}




int main()
{
  int numDays = getDays();
  int offset = getOffset();
  displayHeader();


  displayTable(numDays, offset);
  return 0;
}

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This is what the output is showing:

Code:

---

Number of days: 30
Offset: 3
  Su  Mo  Tu  We  Th  Fr  Sa
                  1  2  3  4
  5  6  7  8  9  10  11
  12  13  14  15  16  17  18
  19  20  21  22  23  24  25
  26  27  28  29  30

---

The printing of the spaces for the offset is wrong. Yout table starts with Su therefore offset 0 should be no spaces .
Next the modulo 7 doesn't work if your counter starts from 1.
try this way

Code:

---

  for (days = 0; days < numDays; days++)
  {
      if ((days + offset) % 7  == 0 && days != 0 )
      cout  << "\n";
      cout << "  " << setw(2) << days + 1;
  }

---

the additional condition ( && days != 0 ) is needed because you don't want to start with printing as '\n' if offset is 0

Kurt

Code:

---

  if (offset == 0)  // Mon
      cout << setw(4)  << " ";
  else if (offset == 1)  // Tues
      cout << setw(8)  << " ";
  else if (offset == 2)  // Wed
      cout << setw(12) << " ";
  else if (offset == 3)  // Thurs
      cout << setw(16) << " ";
  else if (offset == 4)  // Fri
      cout << setw(20) << " ";
  else if (offset == 5)  // Sat
      cout << setw(24) << " ";
  else (offset == 6)  // Sun
          ;

---

This is equal to
cout << setw(4 + 4 * offset) << " ";
(except for offset==6)

Quote:

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Originally Posted by Elysia

Code:

---

  if (offset == 0)  // Mon
      cout << setw(4)  << " ";
  else if (offset == 1)  // Tues
      cout << setw(8)  << " ";
  else if (offset == 2)  // Wed
      cout << setw(12) << " ";
  else if (offset == 3)  // Thurs
      cout << setw(16) << " ";
  else if (offset == 4)  // Fri
      cout << setw(20) << " ";
  else if (offset == 5)  // Sat
      cout << setw(24) << " ";
  else (offset == 6)  // Sun
          ;

---

This is equal to
cout << setw(4 + 4 * offset) << " ";
(except for offset==6)

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In other words, it's exactly equal to:

Code:

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cout << setw(4 * (offset + 1) % 7) << " ";

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